2013 Personal tax rates:
http://www.cra-arc.gc.ca/tx/ndvdls/fq/txrts-eng.html

T1013-Personal Consent Form
http://www.cra-arc.gc.ca/E/pbg/tf/t1013/

RC59-Business Consent Form
http://www.cra-arc.gc.ca/E/pbg/tf/rc59/

Penny Rounding Information from the CRA
http://www.cra-arc.gc.ca/gncy/lmntnpnny/menu-eng.html

April 1, 2013 the 12% HST will be replaced by the 5% GST. Check this link for updated information from the CRA.
http://www.cra-arc.gc.ca/harmonization/